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      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - second xserver has no connected output with radeon DIS"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94712">94712</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>second xserver has no connected output with radeon DIS
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>xorg
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Driver/Radeon
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>xorg-driver-ati@lists.x.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>jydcome@21cn.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>xorg-team@lists.x.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Hi, my notebook thinkpad w500 has two video cards, intel / radeon. When i test
some 3d games by wine or some videos by mpv using dri_prime=1 to dynamic enable
radeon card, the game/video window always tearing, see bug report
<a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Synchronization Artifacts with PRIME"
   href="show_bug.cgi?id=76367">https://bugs.freedesktop.org/show_bug.cgi?id=76367</a>.

So i try to start second xserver directly use radeon card, command like this:
$xinit /usr/bin/openbox-session -- :1 -ac -configdir radeon
(/etc/X11/Xwrapper.config already changed to allowed_users=anybody)

I put 20-radeon.conf into /etc/X11/radeon, which is:
Section "Device"
Identifier "radeonGPU"
Driver "radeon"
BusID "PCI:1:0:0"
Option "DRI" "3"
EndSection

The basic thouhgts is default xserver using intel+radoen by dri prime that is 
nice technique still needs upgrade, start second xsever just using one video
cadr(intel or radeon) as needed. 

If i just put 20-intel.conf into /etc/X11/radeon (just use intel IDG), the
second xserver runs ok. Just using radeon DIS the second xserver started
without any conntected output. run 'DISPLAY=:1 xrandr' could confirm that, all
disconnected, so it's black screen on second xserver vtn, and default xserver
vt7 still ok.

Am i missing something to config second xserver using radeon DIS, or it's not
possible?</pre>
        </div>
      </p>
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